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Re: In Need Of Serious Help
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Originally Posted by Robertwav1
I understand that...my only concern here if it is in fact the cat, would be, why it went bad in the first place. Defective ... maybe or, something else caused it. In this case if something was to go wrong with the emmission system causing unburned fuel to enter the cat, it could cause it to go bad. Wouldn't we want to rectify that before making any repairs?
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From bnaylors post earlier
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This letter is intended to make you aware that some 2001-02 Chevrolet Impala, Monte Carlo; Pontiac Grand Prix; and Buick Regal model vehicles, equipped with a 3.4L or 3.8L V6 engine, may have a condition where the catalytic converter is replaced due to complaints of lack of power or illumination of the Malfunction Indicator Lamp (MIL). This may be due to the front endcone insulation from the catalytic converter breaking away and blocking the front of the first catalyst brick and preventing the free flow of exhaust gas through the converter.
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GM spelled out why it failed
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